The Primal Shift

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mike@michaelkummer.com

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153: Pasture-Raised Chicken Is Mostly Nonsense | With Chester Bidmead

September 11, 2026

When you pay a premium for pasture raised chicken or pasture raised pork at the store, you're probably not getting what you think you're getting. Chickens and pigs are monogastric animals — they have one stomach and no rumen, which means they can't ferment grass the way a cow can. Chickens descend from jungle fowl and pigs are woodland animals, so the image of birds on open green pasture has more to do with marketing than with biology. Whatever you feed a monogastric goes straight into its me...

152: Army Colonel Explains What Most Adults Can No Longer Do | Dr. Rob Carter

September 04, 2026

In this episode of the Primal Shift podcast, I sit down with Dr. Rob Carter, an integrative physiologist who has spent 25 years studying what happens to human beings under pressure. His new book, The Convenience Trap, makes the case that modern life has quietly outsourced our navigation, memory, attention, and physical competence — leaving most adults measurably less capable than they were built to be. I like that argument, which is exactly why I pushed on it. "Modern life is making us weak" ...

151: Bemotrizinol EXPOSED: 20 Years Late, But Is It Actually Good?

August 28, 2026

When news broke that the FDA finally approved bemotrizinol — the first new sunscreen ingredient cleared in the United States in over two decades — many people in the health community celebrated it as the ultimate breakthrough in sun protection.  Since it's been used safely across Europe for over 20 years and underwent extensive safety testing, the immediate assumption is that any bemotrizinol-based sunscreen hitting shelves is an automatic win for clean living.  But that assumes the active in...